Detroit DD15 GHG14 (2014-16) Fault Code: SPN 5312 FMI 7 (MCM) Intake Manifold Pressure Low
DESCRIPTION:
Selective catalytic reduction (SCR) abnormal temperature rise.
MONITORED PARAMETER:
SCR inlet temperature, SCR outlet temperature.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
TYPICAL DURATION:
10 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Parked regeneration.
PROBABLE CAUSES:
1. Inspect the entire air intake system for leaks, including the charge air cooler.
2. Intake manifold pressure/temperature sensor.
3. Intake manifold pressure/temperature sensor connector/harness.
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SERVICE MANUAL 3000 AND 4000 SERIES GEN 4 GENERATION – ALLISON
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